Datasheet > LMX2492-Q1_15

LMX2492-Q1_15

更新时间： 2024-11-22 01:15:03

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德州仪器 - TI		/
页数	文件大小	规格书
42页	1869K
描述
LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation

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LMX2492, LMX2492-Q1

SNAS624B –MARCH 2014–REVISED MAY 2015

LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation

1 Features

3 Description

The LMX2492/92-Q1 is

a low noise 14 GHz

•

-227 dBc/Hz Normalized PLL Noise

500 MHz - 14 GHz Wideband PLL

3.15 - 5.25 V Charge Pump PLL Supply

Versatile Ramp / Chirp Generation

200 MHz Max Phase Detector Frequency

FSK / PSK Modulation Pin

wideband delta-sigma fractional N PLL with ramp and

chirp generation. It consists of a phase frequency

detector, programmable charge pump, and high

frequency input for the external VCO. The

LMX2492/92-Q1 supports a broad and flexible class

of ramping capabilities, including FSK, PSK, and

configurable piecewise linear FM modulation profiles

of up to 8 segments. It supports fine PLL resolution

and fast ramp with up to a 200 MHz phase detector

rate. The LMX2492/92-Q1 allows any of its registers

to be read back. The LMX2492/92-Q1 can operate

with a single 3.3 V supply. Moreover, supporting up to

5.25 V charge pump can eliminate the need of

external amplifier, leading to a simpler solution with

improved phase noise performance.

Digital Lock Detect

Single 3.3 V Supply Capability

Automotive 125°C Q100 Grade 1 Qualification

Non-Automotive (LMX2492) Option

Applications

•

Automotive FMCW Radar

Military Radar

Device Information

Microwave Backhaul

PART NUMBER

LMX2492-Q1RTW WQFN (24)

LMX2492RTW WQFN (24)

PACKAGE

BODY SIZE (NOM)

4.00 mm x 4.00 mm

Test and Measurement

Satellite Communications

Wireless Infrastructure

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Sampling Clock for High Speed ADC/DAC

4 Simplified Schematic

OSCin

R Divider

(16 bit)

CPout

Vcp

Phase

Comp

Charge

Pump

51 :

GND/OSCin*

C2_LF

R2_LF

51 :

C1_LF

GND (x3)

18 :

Vcc (x5)

Fin

CLK

DATA

MICROWIRE

Interface

36 :

18 :

To Circuit

N Divider

(18 bit)

Fin*

68 :

TRIG1

TRIG2

51 :

Modulation

Generator

Compensation

(24 bit)

MUX

MOD

MUXout

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...42

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与LMX2492-Q1_15相关器件

型号	品牌	获取价格	描述	数据表
LMX2492-Q1RTW	TI	获取价格	LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation
LMX2492QRTWRQ1	TI	获取价格	具有斜坡/线性调频脉冲生成功能的汽车级 500MHz 至 14GHz 宽带、低噪声分数 N
LMX2492QRTWTQ1	TI	获取价格	具有斜坡/线性调频脉冲生成功能的汽车级 500MHz 至 14GHz 宽带、低噪声分数 N
LMX2492RTW	TI	获取价格	LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation
LMX2492RTWR	TI	获取价格	具有斜坡/线性调频脉冲生成功能的 500MHz 至 14GHz 宽带、低噪声分数 N PL
LMX2492RTWT	TI	获取价格	具有斜坡/线性调频脉冲生成功能的 500MHz 至 14GHz 宽带、低噪声分数 N PL
LMX2502	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2502	TI	获取价格	具有集成 VCO 的频率合成器系统
LMX2502LQ1635	NSC	获取价格	PLLatinum⑩ Frequency Synthesizer System with
LMX2502LQ1635/NOPB	TI	获取价格	具有集成 VCO 的频率合成器系统 \| NJB \| 28 \| -30 to 85

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